In expiration, diaphragm becomes.

Flattened

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Relaxed

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Straightened

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Arched/Dome-shaped

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Solution

The correct option is B Relaxed
The relaxation of diaphragm (attaining dome shape) and intercostal muscles causes expiration. Hence, Option B is correct.

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Similar questions

In expiration diaphragm becomes

flattened

relaxed

straightened

arched/dome shaped

During expiration the diaphragm becomes:

During expiration, the diaphragm moves

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